The nuclide board looks beautiful and user friendly.
I have added the legend at the side, also there is a tab which has a slider to zoom in and out.

This is a picture I have taken after zooming in.
The nuclide board widget shows the stability of compounds.

Kalzium ( Calcium )

Major bugs involved in the above widget have been fixed. This is the first of the changes for Kalzium in KDE 4.3.

The other changes include the Wikipedia integration feature for Kalzium.

This is the beginning of the feature that I have started adding. It gives a link to a particular article in wikipedia. The same feature will be extended to all places in Kalzium where further reference. Eg. kalzium help and Kalzium knowledge database.

You can choose the language of your choice. Right now there are 10 languages in which wiki has 100K + articles.

Here is the selective plotting feature. You can now choose to plot only metals or may be only d-block elements.

In the screen shot you can see that only the p block elements have been plotted.

Changes to Kalzium in KDE 4.2.

I have fixed a bug in the plotting widget that used to plot unknown values and consider them as known values. The average and other statistics were affected because of those unknown values. Now the unknown values are plotted in red and the known values are plotted in green.

Please comment about the features that I have implemented and please feel free to comment on my contributions and if you have any ideas of your own. Please do comment.

Please check out my GSoC proposal in this blog.
I have made two proposals